CN113644966B - High-reliability receiving and processing method and system for deep space exploration uplink instruction - Google Patents
High-reliability receiving and processing method and system for deep space exploration uplink instruction Download PDFInfo
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Abstract
The invention provides a method and a system for receiving and processing a deep space sounding uplink instruction with high reliability. The high-reliability receiving and processing minimum system for the deep space exploration uplink instruction comprises a remote control terminal module, a time-base IO module and a processor module, wherein an AB machine in the remote control terminal module receives a ground uplink remote control instruction according to priority, a double remote control terminal module simultaneously forwards an analyzed correct instruction to the AB machine of the time-base IO module according to a frame format, the AB machine of the time-base IO module informs the processor module to process through interruption, software preferentially responds to a remote control interruption A signal and records the frame count of a remote control frame and the CRC (cyclic redundancy check) value of the remote control frame during response, when a remote control interruption B signal is processed, if the same remote control frame count and the same remote control frame CRC value are processed last time, the remote control interruption is cleared, the execution uniqueness of the remote control instruction is ensured, and the high-reliability receiving and processing of the uplink instruction are realized.
Description
Technical Field
The invention relates to the technical field of measurement and control data transmission integrated comprehensive electronics, in particular to a method and a system for receiving and processing a deep space sounding uplink instruction with high reliability.
Background
At present, remote control terminal hardware is generally adopted for receiving spacecraft remote control instructions, and the remote control terminal has a mode of outputting a remote control packet to processor software for processing and forwarding.
In patent document CN100559411, a satellite remote control instruction operation method is disclosed, which first packages the remote control instruction of conventional satellite operation into a relative time remote control instruction group and stores it in the onboard computer, or notes the relative time remote control instruction group on the ground, and updates the stored relative time remote control instruction group by the onboard computer; a remote control instruction is sent to start a relative time remote control instruction group when the relative time remote control instruction group needs to be executed; and carrying out logic management on the relative time remote control instruction group by the onboard computer.
Patent document No. CN102831761B discloses a method for transmitting a spacecraft remote control switch command, which comprises the following steps: (1) when the ground measurement and control center uploads data to the in-orbit spacecraft, firstly, a code set V is generated by encoding; (2) each code word in the code set V corresponds to a spacecraft remote control switch instruction, when the ground measurement and control center uploads data to the in-orbit spacecraft, the code word corresponding to the spacecraft remote control switch instruction to be sent is selected from the code set V, and the code word is packaged into an uplink data frame and then sent to the in-orbit spacecraft; (3) and the on-orbit spacecraft unpacks the uplink data frame after receiving the uplink data frame, and then decodes the 12bit code word obtained after unpacking, thereby completing the data transmission between the ground measurement and control center and the on-orbit spacecraft.
In patent document No. CN103399533B, a satellite remote control command priority control system is disclosed, which comprises a remote PSK multichannel priority control module, a remote PCM priority control module, and a remote data processing device module. By adopting a satellite remote control instruction priority control system with simple and reliable logic design, based on direct instruction PSK signal priority control and remote control PCM data priority control, a priority control strategy is implemented by a logic circuit, and the purpose that when two paths of burst data arrive at the same time, the remote control device A, B outputs two paths of different remote control instructions at the same time is achieved.
Patent document No. CN108428335B discloses a method for determining the execution condition of a remote control command based on a command count change as a criterion, comprising the steps of: before sending the instruction, recording an instruction counting parameter value and a time scale of the latest frame before sending the instruction in a cache; after the instruction is sent, estimating judgment starting time, wherein the judgment starting time represents the time for starting judging the instruction execution result and represents the time for predicting the change of the instruction counting parameter after the instruction is executed; estimating the initial time of receiving the instruction counting parameter after the instruction is sent and before the judgment starting time; estimating the effective time interval of the instruction counting parameter value of the latest frame before the instruction is sent, which is recorded in the cache; determining a previous instruction counting parameter value at the judgment starting time; and judging the instruction execution condition by adopting a two-out-of-three comparison method after reaching the judgment starting time.
In patent document CN103368638B, a measurement and control communication method and system for a deep space probe are disclosed, the method is used for completing information interaction between a ground station and the deep space probe and probe orbit determination, and the method includes: four microwave radio signal channels are arranged between the deep space probe and the ground station by adopting an uplink carrier frequency and a downlink carrier frequency, wherein the four microwave radio signal channels comprise a remote control command channel, a remote measurement data channel, a scientific data channel and a VLBI (very long balanced radio interface) track measurement beacon channel; combining three channel signals of engineering telemetering data, scientific detection data and VLBI (very high performance bi-directional) rail measurement beacons into a downlink transmission signal, and finally adopting a transmitter to finish the sending function of all downlink signals; and generating an orbit measurement beacon by using a frequency reference signal of a high-stability frequency source, transmitting the orbit measurement beacon to a ground VLBI measurement network, and completing an orbit measurement task of the deep space probe by the ground VLBI measurement network through Doppler frequency velocity measurement and signal interference angle measurement.
In order to ensure reliable receiving of the remote control instruction of the deep space exploration spacecraft, high-gain antennas and medium-gain antennas are respectively arranged at different positions of the spacecraft, and a deep space transponder A and a deep space transponder B respectively select different antennas, so that some error codes can exist in the remote control instruction received by the deep space transponder due to different antenna angles and channel transmission; when the remote control command received by the remote control terminal authorized by the remote control terminal is rejected, the remote control command needs to be retransmitted again in the original mode, and a technical scheme needs to be provided to improve the technical problem because the deep space detection has a long distance, a long delay and a low uplink code rate.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a method and a system for receiving and processing a deep space sounding uplink instruction with high reliability.
According to the high-reliability receiving and processing method for the deep space sounding uplink instruction, the method comprises the following steps:
step S1: the remote control terminal module selects an input source of the remote control signal according to the priority of the locking signal;
step S2: after the remote control terminal module finishes the priority selection of the locking signal, BCH decoding, descrambling and CRC (cyclic redundancy check) are carried out on the uplink remote control information, and after the validity judgment of the remote control frame is finished, the double computers simultaneously forward the remote control frame to the time base IO module;
step S3: after receiving the remote control frame sent by the remote control terminal module, the time base IO module triggers a remote control interrupt A signal and a remote control interrupt B signal to inform the processor module to process;
step S4: the comprehensive electronic software of the processor module inquires a remote control interrupt request once every preset time, preferentially inquires a remote control interrupt A signal, compares the remote control frame count received this time with the frame count of the last time, processes and forwards the remote control data if the frame counts of the two times are different, and updates the frame count and the CRC value of the time; if the two frames are the same in count, judging whether the CRC value of the current remote control frame is equal to the CRC value stored last time, if the two CRC values are different, processing and forwarding the remote control data, and updating the CRC value of the current time; otherwise, the process is not carried out, and the frame of the note number is discarded; then, whether the remote control terminal B has an interrupt signal or not is inquired, and remote control interrupt processing is carried out according to the same rule, so that the uniqueness of remote control instruction execution is realized.
Preferably, in the step S1, in the policy for selecting the priority of the remote control terminal module, the dual remote control terminal modules receive the remote control command signal.
Preferably, if the channel transmission error code in step S2 causes only one remote control command of the deep space transponder AB to be correctly received by the remote control terminal module, the ground command is correctly transmitted to the time base IO module.
Preferably, as long as the correct remote control frame is received in step S3, remote control interruption is triggered, secondary diagnosis is performed by the integrated electronic software of the processor module, the ground missending of the remote control command is rejected, and the correct remote control command is received and executed.
Preferably, the remote control terminal module, the time-base IO module and the processor module form a minimum system, an AB machine inside the remote control terminal module receives a ground uplink remote control instruction according to priority, the dual machines simultaneously forward an instruction analyzed correctly to the AB machine of the time-base IO module according to a frame format, the time-base IO module AB machine notifies the processor module to process through interruption, software preferentially responds to a remote control interruption a signal, records a frame count of a remote control frame and a CRC of the remote control frame while responding, and when a remote control interruption B signal is processed, if the same remote control frame count and the same remote control frame CRC have been processed last time, the remote control interruption is cleared, so that uniqueness of remote control instruction execution is realized.
The invention also provides a high-reliability receiving and processing system for the deep space exploration uplink instruction, which comprises the following modules:
module M1: the remote control terminal module selects an input source of the remote control signal according to the priority of the locking signal;
module M2: after the remote control terminal module finishes the priority selection of the locking signal, BCH decoding, descrambling and CRC (cyclic redundancy check) are carried out on the uplink remote control information, and after the validity judgment of the remote control frame is finished, the double computers simultaneously forward the remote control frame to the time base IO module;
module M3: after receiving the remote control frame sent by the remote control terminal module, the time base IO module triggers a remote control interrupt A signal and a remote control interrupt B signal to inform the processor module to process;
module M4: the comprehensive electronic software of the processor module inquires a remote control interruption request once every preset time, preferentially inquires a remote control interruption A signal, compares the remote control frame count received this time with the previous frame count, processes and forwards the remote control data if the frame counts of the two times are different, and updates the frame count and the CRC value at the same time; if the two frames are the same in count, judging whether the CRC value of the current remote control frame is equal to the CRC value stored last time, if the two CRC values are different, processing and forwarding the remote control data, and updating the CRC value of the current time; otherwise, the process is not carried out, and the frame of the note number is discarded; then, whether the remote control terminal B has an interrupt signal or not is inquired, and remote control interrupt processing is carried out according to the same rule, so that the uniqueness of remote control instruction execution is realized.
Preferably, in the module M1, the dual remote control terminal modules receive the remote control command signal according to the priority selection policy of the remote control terminal modules.
Preferably, if the channel transmission error code in the module M2 causes only one remote control command of the deep space transponder AB to be correctly received by the remote control terminal module, the ground command is correctly transmitted to the time base IO module.
Preferably, as long as the correct remote control frame is received in the module M3, remote control interruption is triggered, secondary diagnosis is performed by the integrated electronic software of the processor module, the ground missending of the remote control command is rejected, and the correct remote control command is received and executed.
Preferably, the remote control terminal module, the time-base IO module and the processor module form a minimum system, an AB machine inside the remote control terminal module receives a ground uplink remote control instruction according to priority, the dual machines simultaneously forward an instruction analyzed correctly to the AB machine of the time-base IO module according to a frame format, the time-base IO module AB machine notifies the processor module to process through interruption, software preferentially responds to a remote control interruption a signal, records a frame count of a remote control frame and a CRC of the remote control frame while responding, and when a remote control interruption B signal is processed, if the same remote control frame count and the same remote control frame CRC have been processed last time, the remote control interruption is cleared, so that uniqueness of remote control instruction execution is realized.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention selects the input source of the remote control signal according to the priority of the locking signal through the remote control terminal module, thereby solving the problem of correct input of the remote control data;
2. after the legality judgment of the remote control frame is completed through the remote control terminal module dual machines, the problem that the remote control terminal dual machines output correct instructions to the time base IO module at the same time is solved;
3. according to the invention, the remote control interruption A signal and the remote control interruption B signal are triggered by the time base IO module, so that the problem that the processor module receives two remote control interruptions simultaneously is solved;
4. the invention processes the request of remote control interruption AB through the integrated electronic software of the processor module, checks the remote control frame and the CRC value of the remote control frame according to a certain logic, and updates the executed remote control frame and the CRC value of the remote control frame, thereby solving the problem that the remote control command dual-computer receiving command only needs to be executed once.
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Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a minimal system block diagram of the present invention;
FIG. 2 is a flow chart of the processing of remote control data by the processor software of the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
The invention provides a high-reliability receiving and processing method and a system for a deep space exploration uplink instruction, wherein the minimum system is composed of a remote control terminal module, a time-base IO module and a processor module, an AB machine in the remote control terminal module receives a ground uplink remote control instruction according to priority, the double machines simultaneously forward an analyzed and correct instruction to the AB machine of the time-base IO module according to a frame format, the time-base IO module AB machine informs the processor module to process through interruption, software preferentially responds to a remote control interruption A signal and records the frame count of a remote control frame and the CRC of the remote control frame at the same time of response, when a remote control interruption B signal is processed, if the same remote control frame count and the same remote control frame CRC are processed last time, the remote control interruption is cleared, the uniqueness of remote control instruction execution is ensured, and the high-reliability receiving and processing of the uplink instruction are realized.
The invention provides a high-reliability receiving and processing method for deep space exploration uplink instructions, which comprises the following steps:
step S1: the remote control terminal module selects an input source of the remote control signal according to the priority of the locking signal; the priority selection strategy of the remote control terminal module can ensure that the double remote control terminal modules can receive the remote control command signal.
Step S2: after the remote control terminal module finishes the priority selection of the locking signal, BCH decoding, descrambling and CRC (cyclic redundancy check) are carried out on the uplink remote control information, and after the validity judgment (version number, spacecraft identifier, frame length and CRC) on the remote control frame is finished, the double computers simultaneously forward the remote control frame to the time base IO module; if the channel transmits error codes, only one remote control instruction of the deep space responder AB can be correctly received by the remote control terminal module, and the ground instruction can still be correctly transmitted to the time base IO module.
Step S3: after receiving the remote control frame sent by the remote control terminal module, the time base IO module triggers a remote control interrupt A signal and a remote control interrupt B signal to inform the processor module to process; if only correct remote control frame is received, remote control interruption is triggered, secondary diagnosis is carried out by the integrated electronic software of the processor module, ground mistaken sending of remote control instructions is rejected, correct remote control instructions are guaranteed to be received and executed, and high-reliability receiving of uplink instructions is improved.
Step S4: the comprehensive electronic software of the processor module inquires a remote control interrupt request once every 0.5s, preferentially inquires a remote control interrupt A signal, compares the remote control frame count received this time with the frame count of the last time, processes and forwards the remote control data if the frame counts of the two times are different, and updates the frame count and the CRC value at the same time; if the two frames are the same in count, judging whether the CRC value of the current remote control frame is equal to the CRC value stored last time, if the two CRC values are different, processing and forwarding the remote control data, and updating the CRC value of the current time; otherwise, the process is not carried out, and the frame of the note number is discarded; then, whether the remote control terminal B has an interrupt signal or not is inquired, and remote control interrupt processing is carried out according to the same rule, so that the uniqueness of remote control instruction execution is realized.
The invention also provides a high-reliability receiving and processing system for the deep space exploration uplink instruction, which comprises the following modules:
module M1: the remote control terminal module selects an input source of the remote control signal according to the priority of the locking signal; and (3) selecting a strategy according to the priority of the remote control terminal module, and receiving a remote control instruction signal by the remote control terminal module.
Module M2: after the remote control terminal module finishes the priority selection of the locking signal, BCH decoding, descrambling and CRC checking are carried out on the uplink remote control information, and after the validity judgment of the remote control frame is finished, the double units simultaneously forward the remote control frame to the time base IO module; if the channel transmits error codes, only one remote control instruction of the deep space responder AB is correctly received by the remote control terminal module, and the ground instruction is correctly transmitted to the time base IO module.
Module M3: after receiving the remote control frame sent by the remote control terminal module, the time base IO module triggers a remote control interrupt A signal and a remote control interrupt B signal to inform the processor module to process; if only correct remote control frame is received, remote control interruption is triggered, secondary diagnosis is carried out by the comprehensive electronic software of the processor module, the ground mistaken sending of the remote control command is rejected, and the correct remote control command is received and executed.
Module M4: the comprehensive electronic software of the processor module inquires a remote control interrupt request once every preset time, preferentially inquires a remote control interrupt A signal, compares the remote control frame count received this time with the frame count of the last time, processes and forwards the remote control data if the frame counts of the two times are different, and updates the frame count and the CRC value of the time; if the two frames are the same in count, judging whether the CRC value of the current remote control frame is equal to the CRC value stored last time, if the two CRC values are different, processing and forwarding the remote control data, and updating the CRC value of the current time; otherwise, the process is not carried out, and the note number frame is discarded; then, whether the remote control terminal B has an interrupt signal or not is inquired, and remote control interrupt processing is carried out according to the same rule, so that the uniqueness of remote control instruction execution is realized.
The remote control terminal module, the time-base IO module and the processor module form a minimum system, an AB machine in the remote control terminal module receives a ground uplink remote control instruction according to priority, and simultaneously forwards an analyzed correct instruction to the AB machine of the time-base IO module according to a frame format, the AB machine of the time-base IO module informs the processor module to process through interruption, software preferentially responds to a remote control interruption A signal and records the frame count of a remote control frame and the CRC of the remote control frame while responding, when a remote control interruption B signal is processed, if the same remote control frame count and the same remote control frame CRC are processed last time, the remote control interruption is cleared, and the uniqueness of remote control instruction execution is realized.
The invention selects the input source of the remote control signal according to the priority of the locking signal through the remote control terminal module, thereby solving the problem of correct input of the remote control data; after the legality judgment of the remote control frame is completed through the remote control terminal module dual machines, the problem that the remote control terminal dual machines output correct instructions to the time base IO module at the same time is solved; the remote control interrupt A signal and the remote control interrupt B signal are triggered through the time base IO module, so that the problem that the processor module receives two remote control interrupts at the same time is solved; the comprehensive electronic software of the processor module processes the request of the remote control interruption AB, checks the remote control frame and the CRC value of the remote control frame according to certain logic, and updates the executed remote control frame and the CRC value of the remote control frame, thereby solving the problem that the remote control command dual-computer receiving command only needs to be executed once.
Those skilled in the art will appreciate that, in addition to implementing the system and its various devices, modules, units provided by the present invention as pure computer readable program code, the system and its various devices, modules, units provided by the present invention can be fully implemented by logically programming method steps in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Therefore, the system and various devices, modules and units thereof provided by the invention can be regarded as a hardware component, and the devices, modules and units included in the system for realizing various functions can also be regarded as structures in the hardware component; means, modules, units for performing the various functions may also be regarded as structures within both software modules and hardware components for performing the method.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (8)
1. A high-reliability receiving and processing method for deep space sounding uplink instructions is characterized by comprising the following steps:
step S1: the remote control terminal module selects an input source of the remote control signal according to the priority of the locking signal;
step S2: after the remote control terminal module finishes the priority selection of the locking signal, BCH decoding, descrambling and CRC (cyclic redundancy check) are carried out on the uplink remote control information, and after the validity judgment of the remote control frame is finished, the double computers simultaneously forward the remote control frame to the time base IO module;
step S3: after receiving the remote control frame sent by the remote control terminal module, the time base IO module triggers a remote control interrupt A signal and a remote control interrupt B signal to inform the processor module to process;
step S4: the comprehensive electronic software of the processor module inquires a remote control interrupt request once every preset time, preferentially inquires a remote control interrupt A signal, compares the remote control frame count received this time with the previous frame count, processes and forwards the remote control frame if the frame counts of two times are different, and updates the frame count and CRC value of the time; if the two frames have the same count, judging whether the CRC value of the current remote control frame is equal to the CRC value stored last time, if the two CRC values are different, processing and forwarding the remote control frame, and updating the CRC value of the current time; otherwise, the remote control frame is discarded; then, whether the remote control terminal B has an interrupt signal or not is inquired, and remote control interrupt processing is carried out according to the same rule, so that the uniqueness of remote control instruction execution is realized;
the remote control terminal module, the time-base IO module and the processor module form a minimum system, an AB machine in the remote control terminal module receives a ground uplink remote control instruction according to priority, the remote control terminal module double machines simultaneously forward an analyzed correct instruction to the AB machine of the time-base IO module according to a frame format, the time-base IO module AB machine informs the processor module to process through interruption, software preferentially responds to a remote control interruption A signal, records the frame count of a remote control frame and the CRC of the remote control frame while responding, and when a remote control interruption B signal is processed, if the same remote control frame count and the same remote control frame CRC are processed last time, the remote control interruption is cleared, and the uniqueness of remote control instruction execution is realized.
2. The method for highly reliably receiving and processing the deep space exploration uplink command as claimed in claim 1, wherein in the step S1, the remote control terminal modules receive the remote control command signal by the dual remote control terminal modules according to the priority selection strategy of the remote control terminal modules.
3. The method as claimed in claim 1, wherein if the channel transmission error is detected in step S2, only one remote control command of the deep space transponder AB is correctly received by the remote control terminal module, and the ground command is correctly transmitted to the time base IO module.
4. The method for highly reliably receiving and processing the deep space exploration uplink command as claimed in claim 1, wherein in step S3, as long as the correct remote control frame is received, the remote control interrupt is triggered, the comprehensive electronic software of the processor module performs secondary diagnosis, the ground misdelivery of the remote control command is rejected, and the correct remote control command is received and executed.
5. A high-reliability receiving and processing system for a deep space exploration uplink instruction is characterized by comprising the following modules:
module M1: the remote control terminal module selects an input source of the remote control signal according to the priority of the locking signal;
module M2: after the remote control terminal module finishes the priority selection of the locking signal, BCH decoding, descrambling and CRC (cyclic redundancy check) are carried out on the uplink remote control information, and after the validity judgment of the remote control frame is finished, the double computers simultaneously forward the remote control frame to the time base IO module;
module M3: after receiving the remote control frame sent by the remote control terminal module, the time base IO module triggers a remote control interrupt A signal and a remote control interrupt B signal to inform the processor module to process;
module M4: the comprehensive electronic software of the processor module inquires a remote control interrupt request once every preset time, preferentially inquires a remote control interrupt A signal, compares the remote control frame count received this time with the previous frame count, processes and forwards the remote control frame if the frame counts of two times are different, and updates the frame count and CRC value of the time; if the two frames have the same count, judging whether the CRC value of the current remote control frame is equal to the CRC value stored last time, if the two CRC values are different, processing and forwarding the remote control frame, and updating the CRC value of the current time; otherwise, the remote control frame is discarded; then, whether the remote control terminal B has an interrupt signal or not is inquired, and remote control interrupt processing is carried out according to the same rule, so that the uniqueness of remote control instruction execution is realized;
the remote control terminal module, the time-base IO module and the processor module form a minimum system, an AB machine in the remote control terminal module receives a ground uplink remote control instruction according to priority, the remote control terminal module double machines simultaneously forward an analyzed correct instruction to the AB machine of the time-base IO module according to a frame format, the time-base IO module AB machine informs the processor module to process through interruption, software preferentially responds to a remote control interruption A signal, records the frame count of a remote control frame and the CRC of the remote control frame while responding, and when a remote control interruption B signal is processed, if the same remote control frame count and the same remote control frame CRC are processed last time, the remote control interruption is cleared, and the uniqueness of remote control instruction execution is realized.
6. The system for highly reliably receiving and processing the deep space exploration uplink command as claimed in claim 5, wherein the module M1 is a priority selection strategy of remote control terminal modules, and the remote control terminal modules receive remote control command signals by two sets.
7. The system for highly reliable receiving and processing of deep space exploration uplink commands as claimed in claim 5, wherein if the channel transmission error occurs in said module M2, only one remote control command of the deep space transponder AB is correctly received by the remote control terminal module, and the ground command is correctly transmitted to the time base IO module.
8. The system for highly reliably receiving and processing the deep space exploration uplink command as claimed in claim 5, wherein the module M3 triggers remote control interruption whenever a correct remote control frame is received, secondary diagnosis is performed by the integrated electronic software of the processor module, ground missending of the remote control command is rejected, and the correct remote control command is received and executed.
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